Guardians of the Galaxy (2008) #11

"The Trial of Jean Grey." The Guardians of the Galaxy get a reminder of Earth when they cross paths with the All-New X-Men during the TRIAL OF JEAN GREY! When an alien race discovers that the original Jean Grey is back on Earth, they decide to hold her accountable for the acts of the Dark Phoenix, and it's up to the Guardians to help the X-Men save her. You won't want to miss the first encounter between two of the biggest franchises in the Marvel U!